Table 3. Parental and Peer Drinking Behaviors and Adolescent Drinking and Driving Model 1 Model 2 Model 3 Variable Beta -Ratio Beta -Ratio Beta I-Ratio Parental drinking 03 72 -.01 -.05 Peer drinking 33 8.72 14 3.07 Age 19 5.09* 15 4.04 Race 06 1.67 03 79 Family SES 03 84 05 1.35 Adolescent drinking 32 6.67 Adolescent drinking x - 16 parental drinking Adolescent drinking x 84 5.40 peer drinking R2 19 24 28 N 623 623 623 Notes: Beta - Standardized regression coofficierts. Model 3 only presents the results for the interaction terms, although all other variables are included in analysis "p